CALCULATOR
Solar ROI calculator
Planning model, not a quote.
Calculating...
01 / SUNLIGHT
From a first back-of-the-envelope estimate to the real trade-offs behind storage, panels, and grid connections.
Planning model, not a quote.
Match overnight energy to a battery bank.
| Panel | Efficiency | Cost |
|---|---|---|
| Mono | 20-23% | Higher |
| Poly | 15-18% | Lower |
| Thin film | 10-13% | Flexible |
Best when outages are common or a connection is unavailable. Add storage and design for your worst week.
Translate modeled solar production into an approachable equivalent.
Panel -> charge controller -> protected battery -> 5 V boost converter -> USB-C. Fuse the battery lead.
Measure shade, use approved equipment, and treat mounting as the primary engineering problem.